Three Oaks Engineering

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Three Oaks Engineering Engineering and planning for a sustainable future

Services

• Transportation Planning
o Highway
o Rail
o Transit
o Bike/Pedestrian
• NEPA Document Preparation (CEs, EAs, EISs)
• Traffic Engineering
• Aquatic surveys (freshwater mussel surveys, freshwater fish surveys, benthic macroinvertebrate sampling, water quality monitoring, essential fish habitat)
• Natural resource investigations (threatened & endangered species surveys, wetland and stream assessments)
• Water resources engineering (hydrologic and hydraulic (H&H) studies, drainage design, floodplain modeling, erosion and sediment control, Stormwater Control Measures (SCMs)/Best Management Practices (BMPs) inspection and design)
• Environmental permitting & compliance
• Public Engagement
• Community Impact Assessment

Certifications

NCDOT, SCDOT, and VDOT disadvantaged business enterprise (DBE)
NCDOT small professional services firm (SPSF) certified
NC Department of Administration Historically Underutilized Business (HUB)
US Small Business Administration Economically Disadvantaged Women-Owned Small Business (EDWOSB)

Our amphibian team recently had the opportunity to survey for the long-tailed salamander (Eurycea longicauda), a member ...
07/31/2025

Our amphibian team recently had the opportunity to survey for the long-tailed salamander (Eurycea longicauda), a member of the lungless salamander family. We were fortunate to get some great photos of this infrequently encountered species in its natural habitat. The tail of the long-tailed salamander accounts for about 60% of its body length! đź“·: David Cooper

Our Durham staff celebrated Earth Day belated by volunteering with  this afternoon. We helped remove invasive plants fro...
04/26/2025

Our Durham staff celebrated Earth Day belated by volunteering with this afternoon. We helped remove invasive plants from Wrightwood Park 🌍 🌳

03/19/2025
We had a great time at our annual outing to the Durham Bulls! We even got to meet the bestest boy, Ripken the Bat Dog, a...
04/07/2024

We had a great time at our annual outing to the Durham Bulls! We even got to meet the bestest boy, Ripken the Bat Dog, and give him one of our Three Oaks dog toys!

One of our furthest
03/31/2024

One of our furthest

03/08/2024

* Our transit practice provides environmental and transit planning support for our clients’ transformative public transit, active transportation, and multimodal transportation projects.

Happy International Women's Day, especially to the fantastic women of Three Oaks!
03/08/2024

Happy International Women's Day, especially to the fantastic women of Three Oaks!

As part of our celebration of Black History Month, we put together these lists of local, Black-owned businesses for staf...
02/01/2024

As part of our celebration of Black History Month, we put together these lists of local, Black-owned businesses for staff in our three office locations--Durham (NC), Raleigh (NC), and Columbia (SC). We’re sure we missed some and would love to know if there are more in your area. Drop us a comment of some of your favorites so we can check them out too!

Address

324 Blackwell Street Ste 1200
Durham, NC
27701

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

Telephone

(919) 732-1300

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